Remember when Davis 1st got them after some success with the .28 Co2 shotgun which mainly sold because he filled it with air -1,500psi- took a Hog in Fla. and a magazine story was written. Too many tried the same thing (was meant for Co2) which was'nt safe so ...... .
To me the Farco was one of the finest airguns made in a hot thatch hut with only a hack saw and screw driver & solder.
They was a much later model brought into GA by ?? which also would accept Co2, same QC.
The Garco, Farco and one more ?arco were also imported later, all flavors available.
Theoretically 200 pumps to "full" and 20 pumps between shots would produce 5 good shots which was likely true if hunting large Birds at 15' . Some had wood which you could not import today.
Here's a picture of my old Farco, maker even used top shelf-New- roofing tack to attach the butt pad. This one was colored as yours until refinished.
If you find the right collector perhaps as high as $150 in value.
John